If you're trying to lose weight, cutting back on vodka or other types of alcohol is a good place to start. Alcohol has no nutritional value, but it does contain about 7 calories per gram. Although the link between alcohol and weight gain has not been well-studied, the Centers for Disease Control and Prevention reports that the average American adult consumes nearly 100 calories per day from alcoholic beverages.
A 1-ounce serving of Skyy vodka contains about 60 calories. That's the same number of calories you'll find in any brand of 80-proof vodka, as well as other spirits, such as tequila and whiskey. Adding tonic water, lemon-lime soda or cranberry juice will add significant calories and sugar to your drink of vodka. If you prefer mixed drinks, add some club soda and a twist of lemon or lime to add flavor without increasing the calories.